18-28-917.5.4 Mounting of unlisted appliances.
   Unlisted food service counter appliances shall not be set on combustible material unless they have legs that provide not less than 4 inches (100 mm) of open space below the burners and the combustible surface is protected with insulating millboard at least 1/4 inch (6 mm) thick covered with sheet metal not less than 0.0122 inch (0.3 mm) thick, or with equivalent protection.